Patent US3303125A successfully refreshed from Google Patents.
US3303125A
Expired / Lapsed
US
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Preparation of oils of high solvent character
Assignee: North Atlantic Energies SA
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Filing: 1964-12-09
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Granted: 1967-02-07
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Expires: 1984-12-09
Abstract
No abstract record available.
Inventors
- 👤 Marter Andre
- 👤 Taillardat Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:56
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/44; C10G21/00; C10G21/06; C10G21/12; C10G21/14; C10G2400/00; C10G2400/14; C10G2400/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A PROCESS FOR PREPARING A LUBRICATING OIL FRACTION OF INCREASED AROMATIC HYDROCARBON CONTENT WHICH COMPRISES: (A) EXTRACTING A PETROLEUM DISTILLATE HAVING AN AROMATIC HYDROCARBON CONTENT OF UP TO 40% IN CA WEIGHT PERCENT AND A VISCOSITY AT 100*F. WITHIN THE RANGE OF 75 TO 100 SUS WITH A SELECTIVE SOLVENT TO OBTAIN A RAFFINATE HAVING A VISCOSITY-BRAVITY CONSTANT WITHIN THE RANGE OF 0.815 TO 0.830, AND A SOLVENT EXTRACT; (B) BLENDING SAID EXTRACT WITH AN UNEXTRACTED PORTION OF SAID DISTILLATE IN PROPORTIONS CONTAINING FROM 20 TO 80 WEIGHT PRCENT OF EXTRACT AND 80 TO 20 WEIGHT PERCENT OF DISTILLATE; (C) HYDROFINING THE SAID MIXTURE AT A TEMPERATURE IN THE RANGE OF 400* TO 700*F. AND 10 TO 100 ATMOSPHERES PRESSURE AT A FEED RATE IN THE RANGE OF FROM 0.3 TO 5 VOLUMES OF OIL PER VOLUME OF CATALYST PER HOUR USING FROM 50 TO 1000 VOLUEMS OF HYDROGEN (AT NTP) PER VOLUME OF OIL.
Claim 2
Dependent Claim
155 words
A PROCESS FOR PREPARING A LUBRICATING OIL FRACTION OF INCREASED AROMATIC HYDROCARBON CONTENT WHICH COMPRISES: (A) EXTRACTING A PETROLEUM DISTILLATE HAVING AN AROMATIC HYDROCARBON CONTENT OF UP TO 40% IN CA WEIGHT PERCENT AND A VISCOSITY AT 100*F. WITHIN THE RANGE OF 75 TO 100 SUS WITH A SELECTIVE SOLVENT TO OBTAIN A RAFFINATE HAVING A VISCOSITY-BRAVITY CONSTANT WITHIN THE RANGE OF 0.815 TO 0.830, AND A SOLVENT EXTRACT; (B) BLENDING SAID EXTRACT WITH AN UNEXTRACTED PORTION OF SAID DISTILLATE IN PROPORTIONS CONTAINING FROM 20 TO 80 WEIGHT PRCENT OF EXTRACT AND 80 TO 20 WEIGHT PERCENT OF DISTILLATE; (C) HYDROFINING THE SAID MIXTURE AT A TEMPERATURE IN THE RANGE OF 400* TO 700*F. AND 10 TO 100 ATMOSPHERES PRESSURE AT A FEED RATE IN THE RANGE OF FROM 0.3 TO 5 VOLUMES OF OIL PER VOLUME OF CATALYST PER HOUR USING FROM 50 TO 1000 VOLUEMS OF HYDROGEN (AT NTP) PER VOLUME OF OIL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |